explain the characteristics of different types of volcanic landforms.
Answers
Answer:
Shield volcanoes- Volcanoes ranging in size from small to truly massive, created by steady, non-violent outpouring of lava. Mauna Loa and Mauna Kea in Hawaii are shield volcanoes rising nearly 9 km (5.6 mi) from the seafloor.
Stratovolcanoes- Also known as composite volcanoes, stratovolcanoes erupt both as flows and violently. Mount St. Helens and Mount Rainier are stratovolcanoes.
Cinder cones- Short, steep volcanoes associated with limited eruptive events. Sunset Crater Volcano and Capulin Volcano are cinder cones.
Lava Domes-Lava domes form where thick (viscous) magma erupts to the surface forming a steep dome-shaped landform. Lava domes can form within a crater of large composite volcano.
Maar-Diatreme Volcanoes-maar-diatreme volcanoes are formed by the explosive result of subsurface magma coming into contact with shallow ground water. The maar is the crater landform produced by explosive eruption(s) and the diatreme is the below surface rock filled volcanic pipe or conduit.
Explanation:
Volcanic landforms are divided into extrusive and intrusive landforms based on whether magma cools within the crust or above the crust.
Rocks formed by the cooling of magma within the crust are called Plutonic rocks.
Rocks formed by the cooling of lava above the surface are called Igneous rocks.
In general, the term ‘Igneous rocks’ is used to refer to all rocks of volcanic origin.
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Answer:
- Volcanic Features and Landforms
- Craters. Craters form as the result of explosive eruptive activity at a volcanic vent where rock, magma, and other material is ejected leaving a conical void.
- Calderas. ...
- Diatremes and Maars. ...
- Lava Flows. ...
- Lava Tubes. ...
- Fumaroles. ...
- Geothermal Features.